# Dreame L10s Ultra Gen 2 vs Dreame L40s Ultra

As of Nov 4, 2026, the Dreame L10s Ultra Gen 2 costs $590 and the Dreame L40s Ultra costs $500, so the Dreame L40s Ultra is $90 cheaper. The Dreame L40s Ultra scores higher in our ranking (8.8 vs 7.8 out of 10). Pick the Dreame L10s Ultra Gen 2 for budget buyers who want a full auto dock. Pick the Dreame L40s Ultra for pet owners with carpet on a budget.

Prices checked Nov 4, 2026. HTML version: https://robotsforthat.com/vs/dreame-l10s-ultra-gen-2-vs-dreame-l40s-ultra/

## Side by side

| | Dreame L10s Ultra Gen 2 | Dreame L40s Ultra |
|---|---|---|
| Price | $590 | $500 |
| 3 year cost | $680 | $500 |
| Our score | 7.8/10 | 8.8/10 |
| Rank in Floors | #14 | #6 |
| Status | on sale | on sale |
| Warranty | 3 years (Dreame US store) | 3 years (Dreame US store) |
| Suction | 10,000 Pa claimed with four to five levels (Dreame, Stuff); no lab suction measurement found | 19,000 Pa claimed (Dreame); Vacuum Chef measured 490 FPM carpet airflow, well above average |
| Navigation | Top mounted LiDAR (Stuff); Tom's Guide found its AI routing unpredictable and incomplete in coverage | LDS LiDAR with Pathfinder, 4 maps (Dreame); Vacuum Wars measured 0.85 m2 per minute |
| Obstacle avoidance | 3DAdapt and Smart Pathfinder claimed (Dreame); Tom's Guide saw it often bump walls and larger objects | 3D structured light only, no camera or object count (Dreame); Vacuum Wars saw it avoid 7 of 24 objects |
| Mopping | Twin spinning pads with MopExtend edge reach, 32 wetness levels and 10.5 mm mop lift (Dreame, Tom's Guide); Stuff needed extra passes for tomato sauce | Dual spinning mops, 10.5 mm lift, extend and auto removal (Dreame); Vacuum Wars measured 0.95 g water left and a 259 combined mop score |
| Self empty | Yes, 3.2 L dust bag, 75 days claimed (Vacuum Wars spec page); Tom's Guide and Stuff say about two months in use | Yes, 3.2 L dust bag, up to 100 days (Dreame) |
| Dock features | Auto empty, mop washing, auto detergent dispensing, clean and dirty water tanks (Tom's Guide, Stuff) | Auto empty, 167 F (75 C) hot water mop wash, hot air drying, self cleaning washboard, auto detergent and water refill, 4.5 L clean and 4.0 L dirty tanks; water hookup kit sold separately (Dreame) |
| Runtime | Up to 240 min in Quiet mode (Dreame lab data) | Up to 220 min in quiet mode from 5,200 mAh (Dreame); Vacuum Wars estimated about 1,935 sq ft per charge |
| Dustbin | 300 ml robot bin (Dreame) | 310 ml robot bin plus 3.2 L dock bag (Dreame) |
| Height | 3.83 in (97.2 mm) (Dreame); Stuff notes the LiDAR knob blocks low furniture | 3.82 in (Dreame) |
| Pet hair | Tom's Guide scored pet hair pickup 70% on hardwood and 80% on carpet | HyperStream Detangling DuoBrush (Dreame); Vacuum Wars measured 91% pet hair pickup, 92% carpet sand removal and 0% hair wrap |
| App | Dreame app with no go zones and CleanGenius auto settings; works with Alexa, Google Home and Siri (Tom's Guide) | Dreamehome app with third party voice assistants only (Dreame); Vacuum Chef notes no built in voice assistant or live video |
| Threshold | 2 cm claimed (Dreame); Tom's Guide saw it struggle with a 1.4 cm threshold before crossing | 1.57 in double layer and 0.87 in single steps (Dreame) |
| Noise | Not measured; Tom's Guide found it fairly quiet but noisy on harder debris | Vacuum Chef measured 78 dB at max suction |
| Best for | budget buyers who want a full auto dock | pet owners with carpet on a budget |
| Skip if | your floors are cluttered or you need precise edge cleaning | your floor often has cables, socks or toys |

## What reviewers found

### Dreame L10s Ultra Gen 2

- Tom's Guide: Scored 85% overall pickup: Cheerios 80% on hardwood and 90% on carpet, kitty litter 95% on both, pet hair 70% on hardwood and 80% on carpet. Bumped into walls and large objects and CleanGenius mistook wood grain for stains. [Source](https://www.tomsguide.com/home/smart-home/i-tested-the-dreame-l10s-ultra-gen-2-robot-vacuum-and-mop-and-its-one-of-the-best-values-yet)
- Stuff (South Africa) (8.5/10): Reliable LiDAR navigation and low maintenance, never needed a mid clean recharge in a small flat. Tomato sauce stains needed extra passes and the top knob blocked low furniture. Subscores Design 8, Performance 9, Features 9, Value 8. [Source](https://stuff.co.za/2025/08/22/dreame-l10s-ultra-gen-2-robot-vacuum-review/)

### Dreame L40s Ultra

- Vacuum Wars (3.51 Vacuum Wars stars): 92% carpet sand removal, 91% pet hair pickup and 0% hair wrap with the DuoBrush, about 1,935 sq ft per charge, but only 7 of 24 obstacles avoided. [Source](https://vacuumwars.com/dreame-l40s-series-review/)
- Vacuum Chef (95/100): Scored 95/100 in its real world cleaning tests, measured 490 FPM carpet airflow and 78 dB at max suction. Obstacle avoidance varied by floor and object. [Source](https://vacuumchef.com/dreame-l40s-ultra-review-powerful-suction-smart-mopping-real-world-performance-tested/?amp=1)

## Questions buyers ask

### Which is better, the Dreame L10s Ultra Gen 2 or the Dreame L40s Ultra?

The Dreame L40s Ultra scores higher in our ranking (8.8 vs 7.8 out of 10). Pick the Dreame L10s Ultra Gen 2 for budget buyers who want a full auto dock. Pick the Dreame L40s Ultra for pet owners with carpet on a budget.

### Which is cheaper?

The Dreame L40s Ultra at $500, versus $590 for the Dreame L10s Ultra Gen 2, checked Nov 4, 2026. Over 3 years with running costs: $680 vs $500.

### What is the difference between the L10s Ultra Gen 2 and the L40s Ultra?

Suction: 10,000 Pa claimed with four to five levels (Dreame, Stuff); no lab suction measurement… on the L10s Ultra Gen 2, 19,000 Pa claimed (Dreame); Vacuum Chef measured 490 FPM carpet airflow, well above… on the L40s Ultra. Navigation: Top mounted LiDAR (Stuff); Tom's Guide found its AI routing unpredictable and incomplete… on the L10s Ultra Gen 2, LDS LiDAR with Pathfinder, 4 maps (Dreame); Vacuum Wars measured 0.85 m2 per minute on the L40s Ultra. Obstacle avoidance: 3DAdapt and Smart Pathfinder claimed (Dreame); Tom's Guide saw it often bump walls and… on the L10s Ultra Gen 2, 3D structured light only, no camera or object count (Dreame); Vacuum Wars saw it avoid 7… on the L40s Ultra.

Full reviews: [Dreame L10s Ultra Gen 2](https://robotsforthat.com/robot/dreame-l10s-ultra-gen-2/index.md), [Dreame L40s Ultra](https://robotsforthat.com/robot/dreame-l40s-ultra/index.md)